+0  
 
0
79
1
avatar+56 

two concentric circles are drawn so that the shaded area is equal to unshaded area. The radius of the outer circle is 6 cm. Find the difference in the radii of the two circles

 Nov 15, 2021
 #1
avatar+115391 
+3

\(\pi r^2 = \pi R^2 - \pi r^2\\ 2\pi r^2 = 36\pi\\ r^2 = 18\\ r=3\sqrt2\\ R-r = 6-3\sqrt2\)

.
 Nov 15, 2021

50 Online Users

avatar
avatar
avatar
avatar